Liu, Haoling, Smowton, Peter  ORCID: https://orcid.org/0000-0002-9105-4842, Summers, Huw, Edwards, Gareth and Drexler, Wolfgang
2009.
Self-pulsing 1050 nm quantum dot edge emitting laser diodes.
Applied Physics Letters
95
(10)
, 101111.
10.1063/1.3227654
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Abstract
We examine self-pulsing, edge emitting, quantum dot laser diodes as continuous broad spectrum light sources emitting at ∼ 1050 nm. Devices are configured with split contacts. When operated without a saturable absorber, the laser emits a number of discrete narrow modes, which merge to form a broad continuous lasing spectrum on application of the saturable absorber. The broadened spectra are consistent with the modulated carrier density expected under Q-switched operation. This provides a simple technique for generating emission suitable for biomedical applications. The spectral width achieved is ∼ 10 nm, and the average output power is 7.5 mW.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Optometry and Vision Sciences Schools > Physics and Astronomy |
| Subjects: | Q Science > QC Physics R Medicine > RE Ophthalmology |
| Uncontrolled Keywords: | carrier density, light sources, optical saturable absorption, Q-switching, semiconductor lasers, semiconductor quantum dots |
| Additional Information: | 3 pp. |
| Publisher: | American Institute of Physics |
| ISSN: | 0003-6951 |
| Last Modified: | 19 May 2023 17:43 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/7352 |
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